Altesora
Room specification
Heated large-format porcelain floor
- Room
- Floor
- Products
- 4
- One of each
- $273.99
- Issued
- August 17, 2026
Specification study. This is the materials list Altesora would specify for this room. Every product in it is real, priced, and orderable. The room has not been photographed — the imagery on our website for this space is a generated concept image, not a record of built work, and it is deliberately not included in this document.
The room this specification describes is published at https://altesora.com/spaces/heated-porcelain-floor
Materials, in build order
Listed from what goes against the substrate to what you finally see. The surface beside each product is where it went, and the option named is the one the SKU and price below refer to.
| Prices, SKUs, and lead times were current on August 17, 2026 and are confirmed at the point of order. This document is a specification, not a quotation. | |||
| Surface | Product | SKU | Unit price |
|---|---|---|---|
| Under the tile | Electric underfloor heating matHeating cable on mesh2 m² mat21.5 sq ft per boxSet in levelling compound so the cable is encased and the surface stays flat. | ALT-HTM-002 | $189per kit |
| Floor | Lastra large-format porcelainPorcelain · Matt600 × 1200 mm — Warm grey15.5 sq ft per box · 2 per boxRated for heated floors, and large enough to keep the joint grid quiet. | ALT-LAS-6012-WG | $8.99per sq ft |
| Under the tile | Large-format tile mortarCementitiousWhite — 20 kg | ALT-MOR-W20 | $42per bag |
| Joints | High-performance groutCementitious · MattWarm grey — 4.5 kg | ALT-GRT-WG | $34per bag |
The figure above is one unit of every priced item, which is a floor rather than an estimate — a real room needs more than one box of tile.
End of schedule — 4 products, priced as of August 17, 2026. A specification, not a quotation; prices and lead times are confirmed at the point of order.
Why it was specified this way
Tile is a good conductor, which is exactly why an unheated tile floor feels cold and a heated one feels better than almost anything else underfoot. The cable is set in self-levelling compound so it is fully encased and the surface above it is dead flat.
The detail most people notice afterwards is the threshold. A flush metal transition between tile and engineered oak keeps the two floors at the same height, so there is no lip to catch and no strip standing proud of either surface.
The build behind it
Heated porcelain floor across an open plan, Reston, VA, February 2025. The case study covers the conditions behind this room and how it was built, at https://altesora.com/portfolio/heated-porcelain-floor
Having this priced for your room
Send us the room and we will confirm quantities against your dimensions, check the specification against your conditions, and price the materials and installation together. Altesora works across Leesburg, VA, Loudoun County, VA, Fairfax County, VA, and the rest of Northern Virginia.
- Enquiries
- https://altesora.com/contact
You are welcome to include this specification in a design presentation, specification packet, or submittal, and to name Altesora as its source. The terms that apply, including what may not be done with our specifications and images, are at https://altesora.com/legal/product-disclaimerRead the terms